/Engine/Plugins/Experimental/UserToolBoxCore/Source/UserToolBoxCore/Public/Editor/UTBTabEditor.h
Unregister tabs that this toolkit can spawn
virtual void UnregisterTabSpawners ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FTabManager](API\Runtime\Slate\Framework\Docking\FTabManager) > & TabManager )